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add adaptors::counting

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bolero-MURAKAMI 2012-05-22 21:16:16 +09:00
parent e078a9c749
commit ea22a6ba5c
9 changed files with 771 additions and 353 deletions
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174
sprout/range/adaptor/counting.hpp Normal file
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@ -0,0 +1,174 @@
#ifndef SPROUT_RANGE_ADAPTOR_COUNTING_HPP
#define SPROUT_RANGE_ADAPTOR_COUNTING_HPP
#include <limits>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/pit.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/iterator/counting_iterator.hpp>
#include <sprout/range/range_container.hpp>
#include <sprout/range/algorithm/copy.hpp>
#include <sprout/type_traits/lvalue_reference.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/utility/lvalue_forward.hpp>
namespace sprout {
namespace adaptors {
//
// counting_range
//
template<typename Incrementable, typename Range = void>
class counting_range
: public sprout::range::range_container<
sprout::counting_iterator<Incrementable>
>
, public sprout::detail::container_nosy_static_size<Range>
, public sprout::detail::container_nosy_fixed_size<Range>
{
public:
typedef Range range_type;
typedef sprout::range::range_container<
sprout::counting_iterator<Incrementable>
> base_type;
typedef typename base_type::iterator iterator;
typedef typename base_type::value_type value_type;
typedef typename base_type::difference_type difference_type;
public:
counting_range() = default;
counting_range(counting_range const&) = default;
explicit SPROUT_CONSTEXPR counting_range(range_type& range)
: base_type(
iterator(),
sprout::next(iterator(), sprout::size(range))
)
{}
SPROUT_CONSTEXPR counting_range(
range_type& range,
value_type const& first
)
: base_type(
iterator(first),
sprout::next(iterator(first), sprout::size(range))
)
{}
SPROUT_CONSTEXPR counting_range(
range_type& range,
value_type const& first,
value_type const& last
)
: base_type(
iterator(first),
sprout::size(range) < last - first ? sprout::next(iterator(first), sprout::size(range))
: iterator(last)
)
{}
};
template<typename Incrementable>
class counting_range<Incrementable, void>
: public sprout::range::range_container<
sprout::counting_iterator<Incrementable>
>
{
public:
typedef sprout::range::range_container<
sprout::counting_iterator<Incrementable>
> base_type;
typedef typename base_type::iterator iterator;
typedef typename base_type::value_type value_type;
typedef typename base_type::difference_type difference_type;
public:
counting_range() = default;
counting_range(counting_range const&) = default;
explicit SPROUT_CONSTEXPR counting_range(value_type const& first)
: base_type(
iterator(first),
iterator(std::numeric_limits<value_type>::max())
)
{}
SPROUT_CONSTEXPR counting_range(
value_type const& first,
value_type const& last
)
: base_type(
iterator(first),
iterator(last)
)
{}
};
//
// counting_forwarder
//
class counting_forwarder {
public:
template<typename Incrementable>
SPROUT_CONSTEXPR sprout::adaptors::counting_range<Incrementable>
operator()(Incrementable const& first) const {
return sprout::adaptors::counting_range<Incrementable>(first);
}
template<typename Incrementable>
SPROUT_CONSTEXPR sprout::adaptors::counting_range<Incrementable>
operator()(Incrementable const& first, Incrementable const& last) const {
return sprout::adaptors::counting_range<Incrementable>(first, last);
}
};
//
// counting
//
namespace {
SPROUT_STATIC_CONSTEXPR sprout::adaptors::counting_forwarder counting{};
} // anonymous-namespace
//
// operator|
//
template<typename Range, typename Incrementable>
inline SPROUT_CONSTEXPR sprout::adaptors::counting_range<
Incrementable,
typename std::remove_reference<typename sprout::lvalue_reference<Range>::type>::type
>
operator|(Range&& lhs, sprout::adaptors::counting_range<Incrementable> const& rhs) {
return sprout::adaptors::counting_range<
Incrementable,
typename std::remove_reference<typename sprout::lvalue_reference<Range>::type>::type
>(
sprout::lvalue_forward<Range>(lhs),
*rhs.begin(),
*rhs.end()
);
}
} // namespace adaptors
//
// container_construct_traits
//
template<typename Incrementable, typename Range>
struct container_construct_traits<sprout::adaptors::counting_range<Incrementable, Range> > {
public:
typedef typename sprout::container_construct_traits<Range>::copied_type copied_type;
public:
template<typename Cont>
static SPROUT_CONSTEXPR copied_type deep_copy(Cont&& cont) {
return sprout::range::fixed::copy(sprout::forward<Cont>(cont), sprout::pit<copied_type>());
}
template<typename... Args>
static SPROUT_CONSTEXPR copied_type make(Args&&... args) {
return sprout::make<copied_type>(sprout::forward<Args>(args)...);
}
template<typename Cont, typename... Args>
static SPROUT_CONSTEXPR copied_type remake(
Cont&& cont,
typename sprout::container_traits<sprout::adaptors::counting_range<Incrementable, Range> >::difference_type size,
Args&&... args
)
{
return sprout::remake<copied_type>(sprout::forward<Cont>(cont), size, sprout::forward<Args>(args)...);
}
};
} // namespace sprout
#endif // #ifndef SPROUT_RANGE_ADAPTOR_COUNTING_HPP

8
sprout/range/adaptor/transformed.hpp
View file

@ -45,8 +45,8 @@ namespace sprout {
typedef typename base_type::iterator iterator;
typedef typename base_type::size_type size_type;
public:
SPROUT_CONSTEXPR transformed_range() = default;
SPROUT_CONSTEXPR transformed_range(transformed_range const&) = default;
transformed_range() = default;
transformed_range(transformed_range const&) = default;
SPROUT_CONSTEXPR transformed_range(functor_type func, range_type& range1, range2_type& range2)
: base_type(
iterator(sprout::begin(range1), sprout::begin(range2), func),
@ -77,8 +77,8 @@ namespace sprout {
> base_type;
typedef typename base_type::iterator iterator;
public:
SPROUT_CONSTEXPR transformed_range() = default;
SPROUT_CONSTEXPR transformed_range(transformed_range const&) = default;
transformed_range() = default;
transformed_range(transformed_range const&) = default;
SPROUT_CONSTEXPR transformed_range(functor_type func, range_type& range)
: base_type(
iterator(sprout::begin(range), func),